Mosquito attractant blends to trap host seeking Aedes aegypti

Abstract

Aedes aegypti is the key vector of three important arboviral diseases -dengue, yellow fever and chikungunya. To identify volatile chemicals which could be used in odour based traps for Aedes mosquito surveillance, a few synthetic compounds and compound blends have been evaluated in an indigenously designed olfactometer. A total of 24 compounds and seven compound blends were screened against unfed adult female Ae. aegypti mosquitoes for attraction and compared with control group. The attractancy or repellency index of the test material to mosquitoes was calculated and rated them as class-1, class-2 and class-3 with rating values ranging 1-15, 16-33 and 34-100 respectively. Out of the 24 compounds tested, six were showing significant attractancy (P< 0.05) and among that 1-octene-3-ol showed maximum attractancy with a rating value of 57.81. Sixteen compounds showed significant repellency (P < 0.05) and among that with a rating value of 72.47, 1-hexene-3-ol showed strong repellent action against Ae. aegypti. All the seven blends showed significant mosquito attractancy (P < 0.05) and among that with a rating of 62.08 Myristic acid, Lactic acid and CO(2) blend exhibited first-rate mosquito attractancy.

A laboratory evaluation of alcohols as attractants for the sandfly Lutzomyia longipalpis (Diptera:Psychodidae)

“…These alcohols were identified at small levels in incubated human sweat [9]. Only nonanol has been demonstrated as relatively attractive to Aedes aegypti (Linnaeus) compared with a control [10]. No studies have been reported on attractiveness of these alcohols to sandflies.…”

Host-feeding pattern of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in heterogeneous landscapes of South Andaman, Andaman and Nicobar Islands, India

“…Reports are available demonstrating that the synergistic effect of octenol (1-octen-3-ol) and CO 2 considerably improves the mosquito captures that have predilection for feeding on mammals (Kline 2007;Silver 2008;Irish et al 2008;Mathew et al 2013). Roiz et al (2012) have obtained bloodfed mosquitoes in their study on sampling West Nile mosquito vectors (Culex spp.…”

Inter‐kingdom signaling — symbiotic yeasts produce semiochemicals that attract their yellowjacket hosts

“…Possible explanations are that the yeast culture bait, unlike the SB, produced some highly volatile components that were either not captured on the Porapak-Q or that remained below detection threshold of the GC-MS. One such component might be CO 2 which serves as an attractant and behavioral activator for many insect species, including cotton bollworms, hawkmoths, wireworms, phytophagous beetles, bed bugs and kissing bugs, fleas, and various phytophagous and hematophagous dipterans (Johnson & Gregory, 2006;Jones, 2013;Gries, 2018). Other such components may be ammonia, acetone, and dimethyldisulfide, which are attractants or behavioral activators for hematophagous dipterans (Hassanali et al, 1986;Braks et al, 2001;Bernier et al, 2003;Mathew et al, 2013). Some yeasts have been shown to produce ammonia (Palkov a et al, 1997;Zik anov a et al, 2002) and dimethyldisulfide (Cholet et al, 2008), and the storage mold Penicillum brevicompactum produces acetone (B€ orjesson et al, 1992).…”